Hi-Link HLK-LD2410B 24GHz Radar Sensor Module with Bluetooth - 1.27mm Pinheaders

This sensor serves as a replacement for a PIR sensor and works on the basis of microwaves and the doppler effect. Due to a difference in speed, this sensor can detect motion, this also works through almost all materials except metal. The sensor status can be read via the "OUT" pin. In addition, you can use the UART interface or connect via Bluetooth to read out more information such as detection distance.

The sensor can be used in different ways:

• There is an official Home Assistant integration, with this you can easily pair the sensor via Bluetooth: LD2410 Home Assistant
• You can configure this sensor via the HLKRadarTool app on Android/iOS, you can set a delay, detection distance, etc., among other things.
• You can read the sensor with a microcontroller such as an ESP32 via the following library: LD2410

The pin spacing is not ideal for normal pin headers, however a Molex Picoblade cable can be used to easily connect the module: Molex Picoblade Female to DuPont Female Compatible Cable - 5p
Note: The colors of the cable do not logically correspond to those of the sensor.